Not even that stressful 
it’s a friendly group…give it a shot!!
We read a set amount each week. Someone creates a thread (depending where in the world) Friday or Saturday for the new chapter/vol/section…and that’s it. As we progress, some people fall behind (not a big deal), some people find it boring or quit (sadness)…either way not a big deal with this particular item one as each story is stand alone. If one story is hard or boring…there’s a new one next week…could even skip a week and jump in the next if something was unbearable.
In any case, the threads are still there…the vocab lists are shared and populated by the group.
Grammar and any other questions are posted to the weekly thread and usually you’ll get an answer from someone rather quickly (sometimes within minutes) with an explanation. Sometimes if there’s confusion, additional posts and further discussion is generated.
Stupid questions welcome…though no need to go looking back through any of my past history…sure I’ve never done that Seriously though if you have the question somebody else will absolutely have the question…ask…keep the group active!!!..best way to help everyone. See the link below as an example.
There is also (haven’t checked in a while) the out loud reading group as well on discord - someone else will have to probably link to where ever that ends up. Usually someone tries to find a general time that works for most of the people and that’s it…
==== You can look back at some past group reads - lots of them…one we just finished (Absolute Beginner Book Club ABBC book)
Teasing Master Takagi-san 
・ Volume 1 - Japanese Language / Reading - WaniKani Community
Basically the clubs are all very similar…you could pick up any of the past book club books and even post in any of the threads (if they are open) and ask questions about something from 6 months ago…you’re likely to get the help you need. (of course first search…someone already probably asked and answered the question)
If it’s your first time…don’t worry have fun…if you’re truly a beginner at reading (personally) I’d caution that the beginner book club assumes you know (generally) N4 grammar …something to keep in mind when you are going to tackle a book. Not to meant to discourage anyone…just something to at least be aware of.
my personal experience
The first book (manga) I read was with the beginner book club thinking yes this is where I should be…turns out the BBC and ABBC had changed a bit over the years and actually based on some of my comments the descriptions of the bookclubs were changed to make it easier to discern the difference.
In any case, if you have never picked up a Japanese book before…the BBC is probably a daunting task…and I’d recommend starting with the ABBC. I was able to finish my first book back over a year ago maybe (been a long time - would have to go find the posts)…but it was a huge chore and I posted so many questions. Everyone was awesome and I learned a lot.
Fast forward to now…I can get through something easy (depending on the vocab) about 30 pages of manga in an hour…it can vary quite a bit (sometimes less/sometimes more) though based on difficulty, furigana (yes/no), and amount of N3/N2 grammar (yes N2 sneaks into the ABBC too haha). But it’s ok…that’s what the forums are for.
I honestly spent several hours sometimes on just a page breaking everything down and writing it all out just working through to get to a place where I could understand. What I needed to do personally (not required by the club by any means) Definitely dove into the deep end…which is why the book club descriptions have been clarified since.
If you don’t know the answer or the grammar is N5 no one is going to mind if you ask questions either…I say this because…reading is just not easy (it’s freaking hard sometimes hahaha) and the group does a really good job trying to select books so that the ABBC, BBC, IBC, ABC are level appropriate.